{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "The neonatal maternal separation ( NMS ) on Sprague - Dawley pups was employed to evaluate the therapeutic effect of KT by virtue of various parameters including visceral hyperalgesia , serum nitric oxide ( NO ) level , and tissue 5 - hydroxytryptamine ( 5 - HT ) level ."}
{"Chemical": ["nitric oxide", "NO", "5 - hydroxytryptamine", "5 - HT"]}